Bucket-dumping apparatus.



PATENTED MAR. 24, 1903.

T. E. ANDERSON. BUCKET DUMPING APPARATUS.

urmcm'lon FILED DEC. 9, 19oz.

H E H 3 s T E E H 8 2 N0 MODEL.

PATENTBD MAR- 24, 1903.

T. E. ANDERSON. BUCKET DUMPING APPARATUS.

APPLIOATIQN FILED DEG. a, 1902.

2 SHEETS-SHEET 2.

N0 MODEL.

p the normal position.

ED STATE-s i PATENT FFICE.

TURYT E. ANDERSON, OF DENVER, COLORADO.

B UCKET-DUMPlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 723,771, dated March24, 1903.

Application filed December 9, 1902- Serial No. 134,579. (No model.)

To all whom it may concern:

Be it known that I, TURY E. ANDERSON, a

citizen of the United States of America, resid-' ing in the cityof'Denver, Arapahoe county, and State of Colorado, have invented certainnew and useful Improvements in Bucket- Dumping Apparatus; and I dodeclare the following to be a full, clear, and'exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

My invention relates to improvements in bucket-dumping apparatus, beingmore especially intended for use in dumping loaded buckets as they aredrawn from mining-shafts. The invention will, however, be found equallyadvantageous in other relations where buckets are to be dumped.

Briefly stated, the apparatus consists of a bucket-holder mounted onlinks connected with a suitable frame and arranged to invert thebucket-holder as the latter moves downwardly from the normal or elevatedposition,

in which it is held bya counterbalance-weight until the loaded bucket isin place, when the bucket-holder and bucket overcome the counterbalanceand move downwardly together until the bucket is dumped into a suitablereceptacle, as a car. The bucket-holder is provided with two dogsexteriorly. pivoted and whose holding extremities normally onteropenings in the wall of the holder far enough to support the bucket whenthe latter is in position. The dogs are-s'pringheld in They are providedwith pivoted links forming guards to prevent the dogs from catching thebucket as the lat ter descends after each dumping act. As the bucket isdrawn up through the holder the link-guards are raised and held in theraised position, allowing the dogs to engage the bottom of the bucket,which remains in position in the holder until the bucket is dumpedandthe bucket and holder are again returned to the elevated position, afterwhich a slight upward movement of the bucket releases the guards andallows them to drop, whereby as the bucket is lowered the latter engagesthe guards and forces the dogs outwardly, permitting the bucket to movedownwardly into the shaft.

Having briefly outlined my improved cons'truction, I will proceedtodescribe the same in detail, reference being made to the accompanyingdrawings, in which isillustrated an embodiment thereof.

' In the drawings, Figure l is a side elevation otmy improvedbucket-dumping apparatus shown in two positions, one being in full linesandthe other in dotted lines. In this view the frame is shown in sectionand one half removed to better disclose the mechanism. Fig. 2 is asection taken through the bucket-holder, showing the bucket below theholder about to enter the same, the parts being shown on alarger scale.Fig. 3 isasimilar viewshowing the bucket in position in the holderreadyto begin the dumping act. Fig. 4 shows the bucket raised to'allow theguards to'fall to position on the dogs prepar atory to'the descent ofthe empty bucket. Fig. 5 is a top view of the 'bucketholder shown indetail, the supporting-links being broken away. Fig. dis a sideelevation of the same shown in the upright position. Figs. 7 and 8illustrate the lower extremities of the links, showing their connectionwith the frame.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate a suitable framework ordinarily termed agallowsfrar'ne. Upon the upper part'of this frame is mounted a sheave 6,over which the cable 7, connected'withabucket 8,passes. The bucketholder9 is connected with the frame by two links 10 and 12, which arepivotally connected with the frame at one extremity, as shown at 1-3 and14, while their opposite ex tremities are pivotally connected with thebucket-holder, as shown at 15 and 16; This holder is provided with abail 17, to which is connected a cable 18, passing over 'asheave 19, theopposite extremity of the cable being provided with acounterbalance-weight 20-of sufficient gravity to support thebucket-holder when free from a loaded bucket.

per extremity of the bucket-holder is pro vided'on each side with a pairof ears 21, be-

The up- Ioo.

tween which is pivoted the upper extremity of a dog 22. In the plane ofthe dogs and below their upperextremities the bucket-holder is slotted,as shown at 23, to allow the hooked lower extremities of the dogs toenter the interior of the holder far enough to support the bucket whenthe latter is in the position shown in Fig. 3. Each dog is provided witha pin 2-1, engaged by a leaf-spring 25, which normally holds the dog inthe position shown in the said figure. Each dog is provided with a shortlink 26, which is pivoted thereon and normally engages the holdingextremity of the dog. (See Fig. 4.)

In describing the operation of the apparatus I will assume that theparts are in the position shown by full lines in Fig. 1 of the drawings.As the bucket 8 is drawn upwardly it enters the bottom of thebucketholdcr, which is outwardly flared for the purpose. As the bucketcontinues its upward movement it strikes the curved lower extremities ofthe dogs and forces the latter outwardly far enough to permit the upwardtravel of the bucket, which, however, strikes the links and lifts themto the position shown in Fig. 3. As soon as this occurs the dogs swinginwardly to their normal position, bringing their horizontal ofisets orfaces 22 under thebottom of the bucket, whereby the latter is heldsecurelyin place. The cable 7 is then slackened and the gravity of theloaded bucket overcomes the counterweight 20, and the bucket and holdermove to the dotted-line position in Fig. 1, the holder and bucket beinginverted during the downward travel. The tipping action of the bucketand bucket-holder is due to the peculiar arrangement of the links 10 and12. The link 10 is located outside of the link 12. The link 10, as shownin the drawings, is the longer and is pivoted to the frame below thelower extremity of the link 12. The link 10 is connected with thebucket-holder at a point in the same horizontal plane with but forwardor to the left of the point where the link 12 is connected with the saidholder, referring to Fig. lot the drawings. These links are bothconnected near the top of the bucket-holder and their points ofconnection are on opposite sides of the vertical center of the holder.Hence as the bucket-holder descends the two links act in harmony orcooperate to perform the tipping or dumping function, as will be readilyunderstood by reference to Fig. 1. \Vhen the parts are in the positionshown by dotted lines in Fig. l, the counterweight is raised to thedotted-line position in the same figure. After the bucket is dumped thepull on the cable 7 returns the bucket and holder to the elevatedposition. These parts then occupy the position shown in Fig. 3. Then aslight upward movement of the bucket lifts it to the position shown inFig. 4:, when the guard-links drop to the position shown in the samefigure, after which the bucket will pass freely down through thebucket-holder and thence into the shaft A for another load, after whichthe operation just described will be repeated.

Having thus described my invention, what I claim is- 1. In abucket-dumping apparatus,the combination with a suitable frame, of abucketholder, a counterbalance normally holding the holder in theelevated position and in the path of the bucket to be dumped, and meansconnected with the bucket-holder for supporting the latter in operativeposition on the frame and adapted to invert the holder and bucket asthey are carried downwardly by the gravity of the load which overcomesthe counterbalance.

2. A bucket-holder comprising a casing adapted to receive the bucket andprovided with two spring-held dogs pivoted on the easing, one on eachside, and normally entering the casing to support the bucket, and guardsmounted on the holder and adapted to engage the dogs to prevent thebucket from catching on the dogs during its downward movement, but whichguards are in the path of the bucket during its upward movement and areby it raised to allow the bucket to be engaged by the dogs while theguards are held between the bucket and the casing of the holder.

3. In bucket-dumping apparatus, the combination with a frame, of abucket-holder provided with bucket-holding dogs and guards as described,a counterbalance connected with the holder, and swinging means mountedon the frame, connected with the bucket-holder, and arranged to invertthe latteras it moves downwardly, substantially as described.

4. In bucket-dumping apparatus, the combination of an openendedbucket-holder provided with pivoted, spring-held bucket-holding dogs,guards adapted to engage the dogs and arranged to be lifted by thebucket when moving in one direction, and preventing the bucket fromcatching on the dogs when the bucket is moving in the oppositedirection, and links connected with the bucket-holder and arranged toinvert the same as the latter moves downwardly, substantially asdescribed.

5. In bucket-dumping apparatus, the combination with a suitable frame,of an openended bucket-holder, a counterbalance connected therewith tohold it normally in the elevated position and in the path of the bucket,and two links connected with the bucketholder on each side and mountedto swing on the frame, the arrangement being such that as thebucket-holder moves downwardly by gravity, it is inverted to empty thebucket, substantially as described.

6. The combination of a bucket-holder provided with spring-heldbucket-holding dogs, and guards for the dogs arranged as described, andlinks for supporting the bucketholder in the path of the bucket andarranged to invert the bucket-holder and bucket as they swingdownwardly.

7. In bucketdumping apparatus, the combination with a suitable frame, ofa bucketholder open at both ends to receive the bucket, a.counterbalance .for supporting the holder in the path of the bucket,means mounted on the holder for supporting the bucket when it ranged toswing on the frame and connected with the bucket-holder, one pair oneach side, the arrangement being such that the links 15 tip thebucket-holder suificiently to dump the bucket as the latter movesdownwardly with the holder.

In testimony whereof I affix my signature in presence of two witnesses.

TURY E. ANDERSON.

approaches in one direction and allowing it Witnesses: to pass throughwhen it enters from the op- 'DENA NELSON, v

-A. J. OBRIEN.

posite direction, and two pairs of links ar-

